[R-SIG-Mac] Packages deldir, class and gpclib fail to load in R 2.13.0

[Ian Reeve]

Hi,

I've been running rgdal, RColorBrewer, maptools, classInt, spdep, gpclib, raster, zoo, cluster and lattice in R2.12 on Mac OSX 10.6.7 for the last 6 months with no problems.  Today I installed R 2.13.0, and downloaded the latest versions of the above packages.  Most of them load without problems, but class (a depend of classInt), and deldir (a depend of spdep) failed to load.  The error message is of the form:

-------------------------------
Loading required package: class
Error in dyn.load(file, DLLpath = DLLpath, ...) : 
  unable to load shared object '/Library/Frameworks/R.framework/Versions/2.13/Resources/library/class/libs/x86_64/class.so':
  dlopen(/Library/Frameworks/R.framework/Versions/2.13/Resources/library/class/libs/x86_64/class.so, 6): Library not loaded: /Library/Frameworks/R.framework/Versions/2.12/Resources/lib/libR.dylib
  Referenced from: /Library/Frameworks/R.framework/Versions/2.13/Resources/library/class/libs/x86_64/class.so
  Reason: image not found
Error: package 'class' could not be loaded
-------------------------------

The problem seems to be either the package is looking in the wrong place (a subdirectory of 2.12 instead of a subdirectory of 2.13) for the file libR.dylib, or the install of R failed to put the files that package class needs in the 2.12 directory.  In the case of deldir, the errant file is libgfortran.2.dylib.

I can get  package class to load without error by taking a copy of libR.dylib from the subdirectory of 2.13 and putting it in the subdirectory of 2.12 where class  expects it to be.

I'm concerned this might be a stupid short-term fix, as calls to the functions in class might also fail due to other files not being in the expected places.

Can anyone suggest any leads to other approaches I could take to get these previously trouble-free packages to behave themselves in R 2.13?

Thank you.

Ian Reeve

Institute for Rural Futures
University of New England
Armidale, NSW 2351